It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 672 789 is not a prime number.
For example, 42 672 789 can be divided by 3: 42 672 789 / 3 = 14 224 263.
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For 42 672 789 to be a prime number, it would have been required that 42 672 789 has only two divisors, i.e., itself and 1.
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42 672 789 is an odd number, because it is not evenly divisible by 2.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 42 672 789 is about 6 532.441.
Thus, the square root of 42 672 789 is not an integer, and therefore 42 672 789 is not a square number.
The square of a number (here 42 672 789) is the result of the product of this number (42 672 789) by itself (i.e., 42 672 789 × 42 672 789); the square of 42 672 789 is sometimes called "raising 42 672 789 to the power 2", or "42 672 789 squared".
The square of 42 672 789 is 1 820 966 921 038 521 because 42 672 789 × 42 672 789 = 42 672 7892 = 1 820 966 921 038 521.
As a consequence, 42 672 789 is the square root of 1 820 966 921 038 521.
42 672 789 is a number with 8 digits.
The multiples of 42 672 789 are all integers evenly divisible by 42 672 789, that is all numbers such that the remainder of the division by 42 672 789 is zero. There are infinitely many multiples of 42 672 789. The smallest multiples of 42 672 789 are: